Adjustable plumb and level



Patented 'Apu 18, 1922.

2 SHEETS-SHEET I.

IIIILIIILIIHlIILILLIIIILIIIIIIILIIILIII I\"\ yN b)\x G. L. PARRISH AND C. A. COOLEY. ADJUSTABLE PLUMB AND LEVEL.

APPLICATION FILED MAR. I6, 192|.

Patented Ap'r. 18, 1922.

2 SHEETS-SHEET 2.

Em w?? 0 j m) J d. w

INVENTRJ A TTORNEY.

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GEORGE L. Palmieri AND oneniznv A. OOOLEY, or COLUMBUS, OHIO.

ADJUSTABLE PLUME AND LEVEL.

iaiaoee.

Specification of Letters Patent.

rammed. Apr. is, resa.

Application led March 16, 1921. Serial No. 452,879.

To all whom t may concern:

Be it known that we, Gnonen L. Pensieri and @HARLEY A. CooLnY, citizens of the United States7 residingat Columbus, in the county of Franklin and State of Ohio, have invented .certain new and useful Improvements in JAdjustable Plumbs `and Levels, of which the following isa specification, reference being had to the accompanying .drawin s.

lhis invention relates to plumbs and vlevels, and has for its object to provide a device .of thischaracter `capable of being adjusted'to the length desired.

Another object is .to provide a device of this character including a movable extension capable of increasing the length of the plumb and level without destroying the shape thereof.

Another object is to provide a deviceof this character including a movable extension slidable yon the support of the `plumb and leveliglasses. without interfering with 'the `adjustment 'of thev glasses.

i to kprovide a device of this character includ- .A vstill further object of the .invention -is ing abody member inl which plumb and level glasses are adjustably mounted and wherein one end of the body member is movableaway from and toward the body member to the medium of Aarms slidable inchannels formed in opposite faces of the bodymember.

A still furtherobject of the invention is to provide a device of this character wherein the body member is provided with means adapted to secure the extension in its adjusted position.v 3 1 VlVith these and other objects in view, the invention consists in the improved construction and arrangement of parts to be Vhereinafter more particularly described, fully claimed and illustrated inthe accompanying drawings, in which:

Figurel is a side elevation of-.a plumb and level in its closed position,

Figure 2 is a side elevation of 'a plumb and level showing theex'tension .in use,v

Figure 3 is asection taken on the line 3-8 of Figure 1,

Figure 4 is a section taken on the line 4 4 of Figure 2, n

Figure 5 is a perspective view of the eX tension,

, lFigure 6 is a plan view of the locking mechanism,

block.

rthe opposite 'faces of said arms.

Figure 7 is a section taken on the line 7 7 of Figure 2, and

Figure 8 is a longitudinal sectional view of the structure sho-wn in Figure 2.

Referring to the drawings, 5 designates a body member formed from a vsinglefpiece of material and including opposed work engagingfaces 6 and 7, said faces being connected by means of webs 8. The sides 9y and` 10 of the body member adjacent the 4faces 5 and 6 are provided with channels 11,

lwhich serves to prevent lateral movement of an extension, the channel `13being substantially 'il-shaped,

ln order to increase the length of the body' member 5, there is provided Ya novel extension which lconsists of va body member o-r block '111 adapted'to coincide with the endV face of the body 'memberand adapted to `form one end of the'body member. The

block 1-1 is provided with plurality kof arms 15 and 16', one yarm extending from each longitudinal corner or edge of the Each'of the arms 15v has its face 15 inclined inwardly and downwardly while the lower face 16a of the arms 16 are inclined uiiwardly, the inner portions of said faces terminating below the inner edge thereof to provide a flange 17 `and a channel 16. The iiange 17 is adapted to be disposed in the channel 15 while the channel 18 `is Va.flaptedy to receive the yridge 19 formed at extending longitudinally of Athe -arms and terminatingk adjacent one' end thereof to provide a stop. lt will be noted that the lower-.facesv of the arms 15 and upper faces of the armslextend in parallel relation to By this novel arrangement, the arms 15 and 16 are permitted to slide in thechannels 11 longitudinally of the body member 5, lateral movement of said arms being prevented through the cooperation of the channel 13 and the angel?, it being of course obvious that sufcient play is allowed to prevent the binding of the arms within the channels 1l.

It will be noted that the outer face 22 of each arm is disposed closely adjacent the work engaging faces 6 and 7, and in right desired to obtain the exact level of Work onL which the device is used. The outer face 22 of each of the arms is provided with a scale 23 which permits the operator to set the extension atthe desired distance without the-use of an additional or separate rule, it being also useful for other measuring purposes.

Projecting from the inner face of each of the work-engaging faces 6 and 7 is a socket 24, said sockets being disposed in opposed registering relation and between certain of the webs of the body member. rlhese sockets, are intended to receive the ends of a shaft 25, a knurled thumb nut 26 being secured to the intermediate portion of theV shaft. The portion of the shaft on one side of the nut 26 is provided with right hand threads, while'the remainingportion on the opposite side of theA nut is: provided with left hand threads. A locking plate 27, Vincluding ra central vthreaded opening, is mounted on each 'threaded end portion of the shaft, the plates includingV fingers 28' adapted to extend through the inner wall of the channelv into the grooves 21 of the arms 15, one nger being provided for each arm.

Y t is of course obvious that when the shaft is rotated by'means of the nut 26, in view of the right and left hand threads, the plates 27 will be moved toward or away from each other so as to cause the fingers 28 to extend into the grooves 21 and engage the arms 15.y Nhen the plates are moved away from eachl other towardthe arms, the fingers come into binding engagement with the arms and thereby lock the same in their adjusted positions, movement of said plates toward each other releasing the arms to permit adjustment ofthe extension. Y

The intermediate portion of vthe body f member 5 is provided with a channel 29,

so'Y said channel having a plurality of openings 30. Disposed within the channel is a casing 31 having a pair of opposed ears 32 depending from the intermediate portion of the bottom of the casing. A socket member' 33 is disposed between the ears 32, said socket member being interiorly threaded and having trunnionsf34 projecting from one end thereof, said trunnionsbeing .jour-- naled in the ears 32 to permitv pivotal movement of the casing 31. A screw 35 is passed through one of the openings 30 into the socket member 3.. Depending from the Vbottom of the casing 31 adjacent each end thereof isa threaded socket 36, each socket being adapted to receive a screw 37, which are .passed through the remaining openings 30. By means of the screws 37 the casing 31 may be adjusted to various inclinations.

Mountedwithin the casing 31Y is a bubble or spirit level glass 38. t

Disposed in spaced relation to the spirit level glass 38 is a plumb glass 39. This glass is adjustable similar to the glass 38 by means consisting ofa casing 40 adapted to receive the glass 39, said casing beingl 'secured to the intermediate portion of a plate 41, the plate 41 having a pair of ears 42depending from its lower intermediate portion. The plate 41 is disposedrwithin the channel 43 formed in the. body member 5. Said channel, similar to the channel 29, is provided with a plurality of openings 44. A socket member 45 similar to the socket member 33 is disposed beneath the plateV for pivotally supporting the same. Y of the plate are provided with sockets 46 adapted to receive screws 47 by .means of which the plate 41 may be disposed in various inclinedv positions.

By this novel device, it is possibleV to increase the length of thebody'memberiwithout causing any portion of the extension to 'overlapA the body member. In addition vto this, Yby the novelV formation of the channel 11 and the arms15 and 16,'the shape and,V accuracy of the body memberlis not disturbed even when the block 14 is'disposed at the limit of its movementl away kfrom the body member 5. Furthermore, thearms rotation of the -shaft 25, the'locking plates The.Vv ends Y 17 are simultaneously moved to lock all ,Y

Vof the arms of the extension in the desired adjusted position, the adjustable feature of the plumb and level glasses permitting the same to be maintained in various inclinations. The invention possesses every feature necessary to render a device of'this character efficient 'and convenient yfor the user. Y Y

What is claimed'is'q j Y 1. A plumb and level of the characterdescribed comprising a body member having channels in the side faces thereof, an` extension vdisposed for sliding'movement on the body member, said extension! having arms slidable in thel channels ofthe bodyV Y member, a means carried by the body-member for engagement with the arms to prevent movement of the extension.

2. A plumb and level of the character tension having a plurality of arms extending therefrom, said arms being slidably engaged with the body member and means carried by the body member for engagement with the armsi'to hold said arms in binding engagement With the body member.

3. An adjustable plumb and level of the character described comprising a body mem ber having inclined channels formed in the side faces thereof, each channel including an under cut portion, an extension disposed at one end of the body member, said eXtension having a plurality of arms extending therefrom and into the channels, said arms being provided with flanges adapted to engage the under cut portions of the channels to prevent lateral movement of the arms with respect to the Vbody p member, and means for holding said arms in their adjusted position on the body member.

4. An adjustable plumb and level of the character described comprising a body member having inclined channels formed in the side faces thereof, each channelincluding an under cut portion, an extension disposed atv one end of the body member, said extension .having a plurality of arms eX- tending therefrom and into the channels, said arms being provided With flanges adapted to engage the under cut portions of the channels to prevent lateral movement ofthe arms with respect to the body member, a shaft rotatably mounted in the body member and between the arms of the extension, plates rotatably mounted on said shaft, lingers carried by said plates and eX- tending through the channels of the body member for engagement with the arms upon rotation of the shaft.

In testimony whereof We hereunto Vaffix our signatures.

GEORGE L. PARRISH, CHARLEY A. cooLnY. 

